Features: _x000D_ This ball bearing is made of high quality ceramic ZrO2 and PTFE material, features high precision, high speed, and wear small. _x000D_ Small frictional resistance, low power consumption, high mechanical efficiency. _x000D_ This is a sealed ball bearing, with good dustproof effect._x000D_ _x000D_ With the characteristic of high stability, high reliability._x000D_ _x000D_ Standardization size, used for machinery manufacturing, equipment installation and maintenance. _x000D_ _x000D_ _x000D_ Specifications: _x000D_ Material: PTFE, Ceramic ZrO2 _x000D_ Model: 6803-2 RS_x000D_ _x000D_ Sealed dustproof form: 2RS_x000D_ _x000D_ Inner diameter: 17mm / 0.67inch_x000D_ Outside diameter: 26 mm / 1.02inch_x000D_ Thickness: 5mm / 0.20inch_x000D_ Weight: 6 g_x000D_ _x000D_ _x000D_ _x000D_ Package Included: _x000D_ 1 x ZrO2 Ball Bearing 1This ball bearing is made of high quality ceramic ZrO2 and PTFE material, features high precision, high speed, and wear small 2Small frictional resistance, low power consumption, high mechanical efficiency 3This is a sealed ball bearing, with good dustproof effect 4With the characteristic of high stability, high reliability 5Standardization size, used for machinery manufacturing, equipment installation and maintenance